Practice golf sphere



Jan. 26, 1932.v J, R, QBRlEN l 1,842,944

PRACTICE GOLF SPHERE Filed Deo, 17, 1930 Patented Jan. 26, 1932 'I l 4 Y UNITED STATES PATENT OFFICE JOHN R. OBRIEN, OF NEWARK, .N EW' PRACTICE GOLF SEHERE Application med December i?, m36. serial No. 5927,93?.

The object of the invention is to provide fragments of considerable size, and as .it is a novel and inexpensive article adapted to desirable to produce a minimum of litter be used in place of a golf-ball fory practising I prefer to make the .wall of the sphere of driving. It consists of a sphere of the size material which disintegrates quite readily.

5 of a golf-ball having a cap or detonating Various compositions may be employed, 55 charge so disposed as to beexploded when the plaster of Paris and sand, preferably not sphere is properly hit.` In order that the sharp sand, being very suitable. An excess sphere may be teed accurately,it has orientaof sand is desirable though not necessary. tion marks so that when theball is placed in Three parts of sand can be used to one part accordance with these marks the cap or detof plaster of Paris, with economy. Ye0

onating organ will be in the precise posi- When the practice golf-ball sphere is proption to be struck by a properly executed erly placed and properly struck, the cap will swing of a golfclub. The article is especialbe exploded, indicating that a good drive ly suitable for use on lawns, or in interiors has been made. Whether the cap is exwhere golf-balls can not be driven. By makploded or not, the sphere is dispersed prac- 65 ing the sphere hollow and employing a cointically into particles. position for its wall which shatters, or better I realize that various changes may be made still practically disintegrates, under shock, in the article claimed herein, and while I little or no muss results from exploding the have described the preferred embodiment of spheres. the invention in detail it will be understood 70 In the accompanying drawings, forming that I do not wish to limit myself to this part hereof: form of execution since other embodiments, Fig. l is a top plan view; realizing the advantages of the invention Fig. 2 is a bottom plan; and more or less fully, may be devised. Fig. 3 is an elevation of the practice golf I claimi 75 sphere, partly broken away and in section, l. An article for practice in driving comresting on a tee; the head oi a club being inprising a sphere of the size of a golf-ball prodicated as it' at the moment ot striking the vided with a detonating charge so disposed explosive cap. n as to be exploded when the sphere is hit prop- The sphere 2 corresponds in size to a golterly by the club. v 80 ball, and is preferably hollow. Its wall 3 is 2. An article for practice in driving comfragile, without being too fragile for shipprising a sphere of the size of a golf-ball nient and handling. A cap 4 of detonating provided with indications for orienting the composition is applied to one spot on the sphere and with a detonating charge so dissphere, though obviously the detonating part posed as to be exploded when the sphere is 85 of the device might be embedded` or be conhit properly by the club. trived in a different manner. .3. An article for practice in driving com- A meridian line 5 intersecting a cross line prising a sphere oi the size of a golf-ball and 6 at right angles makes it easy to orient the of material to be shattered by shock, said 4 ball on a tee a 1n such manner that 'the cap sphere being provlded with a detonating 90 4 will be presented in precise relation to a charge so disposed as to be exploded when proper swing of the club. The head o ot a the sphere is hit properly by the club. Club is shown in section in Fig. 3 merely for 4. An article for practice in driving compurpose of illustration. The intersection'of prising a sphere of the size of a golf-ball and the sight lines 5, 6 indicates the top, or north oi material to be shattered by shock, said 95 pole, of the sphere, and a spot 7 may be placed sphere being provided with indications for directly opposite to indicate the south pole, orienting the sphere and with a detonating which is to rest on the tee. charge so disposed as to be exploded when It would be disadvantageous if the break-V the sphere is hit properly bythe club. ing of the sphere resulted in hard or sharp Y 5.'An article for practice in driving com- 100 prising a shatterable hollow sphere of the size of a boli-ball provided With a detonating charge so disposed as to be exploded When the sphere is hit properly by the club.

G. An article for practice in driving comprising a shatterable hollow sphere of the size of a golf-ball provided with indications for orienting the sphere and with a detonating charge so disposed as to be exploded when the sphere is hit1 properly by the club.

7. An article for practice in driving cornprising a hollow sphere of the size of a golf ball provided with a detonating charge so disposed as to be exploded when the sphere is hit properly by the club, the Wall of said ball being composed of material Which is adapted to be substantially disintegrated by shock.

JOHN R. OBRIEN. 

